The Column - August 2006 - (Page 20)

Marriott and Morrison The Column August 2006 Non-Classical Methods in Comprehensive Two-Dimensional Gas Chromatography Philip J. Marriott and Paul D. Morrison Australian Centre for Research on Separation Science, School of Applied Sciences, RMIT University, Melbourne, Australia. Adopting non-traditional approaches to comprehensive chromatography can reap dividends for a range of separations. also achieve the desired first peak width that allows multiple It may be somewhat audacious to claim that some methods in GC GC can be called non-classical the technique has only sampling of the peak. The 2D column is really only concerned been around for about 15 years and one might argue that this with the elution temperature Te of the compounds as they pass from 1D to 2D. Te determines the retention factor k of is not long enough to establish a suite of classical methods. the compounds on the 2D column, based on carrier flow-rate However, it is possible to describe a general approach to GC GC that held a predominant position in the years up to 1/tM and film thickness df , according to distribution the early 2000s. This incorporated a conventional length 1D constant K : first dimension; ~30 m column interfaced to a short 2D column, typically 1

Table of Contents for the Digital Edition of The Column - August 2006

Market Trends & Analysis
Sample Preparation Techniques for Ion Exchange Chromatography
Characterizing Aerosols using Comprehensive Two-dimensional Chromatography
Non-Classical Methods in Comprehensive Two-Dimensional Gas Chromatography
Supplies & Services
Recent Developments in Column Technology Supplement

The Column - August 2006